JPS607663Y2 - Automatic reversing device for folded sewing edges - Google Patents

Description

[Detailed description of the invention] The present invention is a device that folds the edge of the fabric onto the fabric and sews it as a double edge, and after the finished edge is sewn, it is immediately turned over to the outside of the fabric. This invention is intended to facilitate subsequent handling and to streamline a series of operations by automating such reversing operations.

When sewing various fabrics, the edge of the fabric is folded back to the fabric side and sewn as a double edge. Conventionally, a sewing machine operator folds the edge twice and feeds it into the sewing machine. This method is inefficient and has the disadvantage of causing individual variations in specifications.

In order to solve this problem, it is known that an automatic edge folding sewing device has been developed that automatically bends the edge of the fabric and automatically feeds it to the sewing machine for sewing. be.

In these automated devices, when the sewing is completed, the double edge is folded and superimposed on the fabric, so when conveying it as it is to the stacker position and stacking a considerable number of sheets, the double edge is folded. The curved overlap part is 3 including the fabric thickness.
Due to the thickness of the stacked sheets, there is a thick bulge, which is unstable during stacking, and may cause melting and uneven stacking.Furthermore, when transferring from the stacker position to the next process, the worker must avoid this double edge. It is necessary to manually turn the fabric over and stretch it to the outside of the fabric, and this manual intervention in a series of sewing operations results in a large number of steps and a waste of time.

゛The present invention solves these problems, and in a double edge sewing device that automatically folds and sews the edge of the fabric, the double edge can be quickly moved outward from the fabric after sewing is completed. The device is designed to automatically reverse and unfold the edges of the fabric, and its unique feature is that in the device that folds the edge of the fabric onto the fabric and sews it into a double edge, At the end of the dough moving path, the reversing guide surface is disposed substantially parallel to the upper part of the dough support base plate, and the first half facing the dough entry side is an inclined surface with the entry side being higher and gradually lowering. , a guide presser plate having a fabric presser guide surface, the latter half of which following the guide plane is parallel to the support base plate and is provided with a gap between it and the base plate to lightly press the fabric;
An air injection member is provided between the guide presser plate and the support base plate at the rear end position of the reversal guide surface and directed toward the sewn edge.

The present invention will be described in detail below with reference to the illustrated embodiment. FIG. 1 shows the relationship structure between the fabric and the double edge;
Folding the edge 2 of various types of fabric 1 to an appropriate width and sewing it to the fabric 1 side as shown in the figure to create a double edge is the most commonly used method in sewing processing, and conventional This was done manually by a sewing machine operator, and various sewing (including folding) devices have been developed to automate this process.

For convenience of explanation, an example of this automatic folding sewing device is shown below.
Examples include those shown in FIGS. 2 to 9, and the structure and operation thereof will be briefly explained below.

In FIGS. 2 to 4, reference numeral 3 denotes a fixed plate attached to a fixed base 4, and 5 denotes a fabric conveying belt for conveying the fabric 1, which is hung between rollers 6 and 7 and is driven in the direction of the arrow a. Ru.

Reference numeral 8 denotes a width plate installed on the fixed base 4 so as to form a predetermined stepped portion with respect to the fabric conveying belt 5, and approximately at the center in the longitudinal direction, there is an inclined portion projecting toward the fabric conveying belt 5 side within the same plane. 9, a ruler 10 is provided at the starting end of this tentering board 8, and a presser plate 11 is provided corresponding to the inclined portion 9 to press down the fabric edge 2 on the part tentering board 8. .

Reference numeral 12 denotes a belt for slidingly pressing the fabric edge 2 on the tentering plate 8, from the middle of the inclined part 9 to the rear side.
It is suspended between the driving pulley 13 and driven pulleys 14 and 15, and is driven by the driving pulley 13 in the direction of arrow b.

A folding belt 16 is arranged corresponding to the step between the fabric conveying belt 5 and the tentering plate 8, and is hung between a driving pulley 17 and a driven pulley 18 that rotate around a vertical axis. It is driven in the direction of arrow C by the driving pulley 17.

The driving pulley 17 is interlocked with the driving pulley 13 via a bevel gear mechanism 19.

Reference numeral 20 denotes a guide plate for lightly pressing the folded portion 21 of the fabric 1 to stabilize the folded form.

A sewing machine 22 sews the outer bent portion 23 of the folded fabric 1, and is equipped with a needle 24, a presser foot 25, and the like.

Note that the fabric conveying belt 5, presser belt 12, and folding belt 16 are driven synchronously.

The end portion of the tentering plate 8 is bent downward in an inclined manner to form a pressing guide portion that presses the bent portion 21 of the fabric 1 downward and guides it to the sewing machine 22 while the guide plate 20 remains in the inserted state. ing.

In the sewing device having the above configuration, as shown in FIG.
When folding and sewing one end, first, the fabric conveying belt 5, the presser belt 12, and the folding belt 16 are brought into a synchronous driving state, and then the fabric conveying belt 5 is moved as shown in FIG.
The fabric 1 is placed on the starting end of the fabric 1, and the edge 2 of the fabric is aligned with the ruler 10 and placed on the width-setting plate 8, and the fabric 1 is conveyed by the fabric conveying belt 5 in the direction indicated by the arrow a.

When the fabric 1 reaches the folding belt 16, as shown in FIG. 5, the fabric 1 is further conveyed while pressing the part hanging down from the width plate 8 from the lateral direction toward the step side.

At this time, the jump of the fabric edge 2 is restricted by the presser plate 11 to prevent the fabric edge 2 from coming off the tentering plate 8.

In this way, the fabric 1 is conveyed one by one while pressing the hanging part of the fabric 1 with the folding belt 16, and when it reaches the inclined part 9 of the tentering plate 8, this inclined part 9 is conveyed in the same plane. Since it protrudes toward the belt 6 side, the fabric 1 is gradually bent into two shapes by the inclined portion 9 as shown in FIGS. 12 to prevent the dough 1 from shifting.

After passing through the inclined part 9, the fabric 1 is completely bent into two shapes as shown in FIG. The folded part 21 of the fabric 1 is penetrated into the area and the folded part 21 of the fabric 1 is lightly pressed to stabilize the folded form, and the pressure guide part of the width-setting plate 8 presses it downward and sends it to the sewing machine 22 at the rear, and the folded part 21 of the fabric 1 is pressed down. As shown in FIG. 8, the outer end bent portion 23 is sewn with a sewing machine 22, and the fabric edge 2 protruding from this sewn portion 26 is cut with a cutter.

Therefore, the fabric 1 is folded into a Z shape, and the outer end bent portion 23
Since the fabric 1 is sewn, the double edges overlap on one side of the fabric 1, and the fabric 1 is transported to the next process side by the conveyor belt 5.

In this device, the tentering plate 8 is provided with an inclined portion 9, but this is because the tentering plate 8 is made parallel as shown in Figure 9, and the folding belt 16 is arranged obliquely toward the stepped portion. has the same effect.

As is clear from this example, in the double edge automatic folding and sewing machine, when the sewing is completed, an eighth
As shown in the figure, since the double edges are carried out of the device in a folded and overlapping posture, it becomes difficult to stack the layers in the stacker as mentioned above, and in the next process, the double edges are folded and overlapped. It becomes necessary to manually turn the edges to the outside of the fabric 1 and adjust the shape.

The present invention has been made to solve these problems. Specifically, as shown in FIG. On one side of the sewing machine side, there is a support base plate 28 that supports the folded and overlapped fabric 1 of the sewn double edge 27 together with the belt 5, and a support base plate 28 that is arranged in parallel above the plywood 28. A guide holding plate 29 that guides the reversal of the heavy edge 27 and an air injection member 30 inserted between both plates 28 and 29 are provided.

The details of these structures are as illustrated in FIGS. 10.11 and 12, in which the support base plate 28 is arranged parallel to and at the same level below the belt 5, and the double edge 27 A part of the polymerized fabric 1 is supported and moved in the same direction on the base plate 28 by the belt 5.

On the other hand, the guide holding plate 29 is arranged above the support base plate 28 in a parallel manner as a whole, as shown in FIG. A reversal guide surface 29a is formed as an inclined surface, which stands upward with the sewn portion 26 as a fulcrum and has enough room to be reversed outward. The inverted guide surface 2
A fabric presser guide surface 29b is formed in series at the rear end of 9a.

This dough holding guide surface 29b is parallel to the support base plate 28,
In addition, there is a gap between the base plate 28 and the guide surface 29b to lightly press the fabric 1 following the double edge 27, and a double edge is provided on one side of the reversing guide surface 29a facing the fabric 1 side. A presser surface 29 that lightly presses a part of the fabric 1 following the double edge 27 between it and the support plate 28 without interfering with the support plate 27.
c is formed inwardly and parallel to the plywood 28.

At the rear end of this pressing surface 29c, an air injection member 30 is inserted between the plates 28 and 29 in a pipe form, and its nozzle 30a is inserted into the bent portion 20 shown in FIG. 8 at the double edge 27. It is aimed at

Needless to say, the automatic folding and sewing device for the double edge 27 is not limited to those shown in FIGS. 2 to 9, and may be of a different type in its mechanism or structure. Even if the fabric 1 has a double edge 27 formed in a folded overlapping manner on one side, the device of the present invention is applicable.

According to the device of the present invention, if the double edge 27 of the fabric 1 is passed through the sewing machine 22 in a folded and superposed position on one side by the automatic folding and sewing device shown in FIGS. 2 to 9, The double edge 27 along with the fabric 1 is transported by the fabric conveyor belt 5 to the first
1. Proceeding in the direction of the arrow as shown, the double edge 27
The polymerized fabric 1 side advances onto the support base plate 28 under the pressure of the previously mentioned pressing surface 29c of the guide pressing plate 29, and the nozzle of the air injection member 30 located at the rear end of the pressing surface 29c. The air jetted from 30a enters the lower part of the bent part 21 and makes it stand up, so that the double edge 27 uses the sewn part 26 as a fulcrum and is guided by the reversing guide surface 29a to smoothly move outward. The fabric 1 is rotated, that is, turned over 180 degrees and stretched outward.

At this time, lateral movement of the fabric 1 does not occur due to the clamping between the base plate 28 and the pressing surface 29c.

Further, the reversed double edge 27 is conveyed out of the apparatus by the belt 5 while maintaining its posture through the fabric 1 being held between the fabric pressing guide surface 29b and the base plate 28.

As a result, when stacking this fabric 1 on a stacker at a different position, since the double edge 27 is stretched on one side of the fabric 1, there is no significant thickness or bulk, and reliable stacking is ensured. is obtained, and there is no need to modify the double edge 27 in the next process.

Note that FIG. 12A shows the state immediately before the reversal, and the opening of the same figure shows the state after the reversal.

As described above, with the device of the present invention, the sewn double edge 2
7 is because the overlapping posture on the fabric 1 can be easily automated to the stretching posture by turning outward and lying down.
This eliminates the need for post-mortem rework, making the series of operations more efficient and allowing for better progress in procedures.

At this time, the structure of the support base plate 28, guide presser plate 29, and air injection member 30 makes it possible to reliably and easily invert the double edge 27 without interfering with the accurate movement of the fabric 1. is also extremely simple.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of sewing a double edge, FIG. 2 is a front view of an example of an automatic folding sewing device for sewing the same edge, FIG. 3 is a plan view of the same including the device of the present invention, and FIG. , 5゜6, 7.8 shows lines A-A, line B-B, line C-C, line D-D, and E- in Fig. 2.
9 is an explanatory diagram of a modified example of the diffractive belt, FIG. 10 is a perspective view of an embodiment of the device of the present invention, and FIG. 11 is a perspective view showing an inverted state of the double edge. FIG. 12 is a side sectional view of the main part showing the state before and after the reversal. 1...Fabric, 27...Double edge, 28
...Supporting base plate, 29...Guide holding plate, 29a...Reversing guide surface, 29b...
・Dough presser guide surface, 29c...Presser surface, 30
...Air injection member.

Claims (1)

[Scope of utility model registration request] In an apparatus for folding the fabric edge onto the fabric and sewing it into a double edge, at the end of the fabric movement path where the sewn edges are overlapped, there is a support base plate for the fabric and an upper part of the support base plate. A reversing guide surface which is arranged in a substantially parallel manner and has an inclined surface where the entrance side is high on the entrance side and gradually becomes lower due to the first half facing the fabric entrance side, and the second half following the guide surface is parallel to the support base plate and is made of plywood. a guide presser plate having a fabric presser guide surface provided with a gap for lightly pressing the fabric; disposed between the guide presser plate and the support base plate at the rear end position of the reversing guide surface; 1. An automatic reversing device for folded and sewn edges, characterized by comprising an air injection member directed toward the sewn edges.